S
M
T
W
T
F
S
29
46°
16°
30
41°
10°
1
34°
14°
2
29°
18°
3
39°
17°
4
37°
13°
5
35°
20°
6
32°
22°
7
38°
22°
8
38°
19°
9
37°
16°
10
35°
17°
11
38°
13°
12
33°
9°
13
26°
6°
14
24°
12°
15
26°
21°
16
36°
19°
17
Hist. Avg.
28°
9°
18
Hist. Avg.
28°
9°
19
Hist. Avg.
27°
9°
20
Hist. Avg.
27°
9°
21
Hist. Avg.
27°
8°
22
Hist. Avg.
27°
8°
23
Hist. Avg.
26°
8°
24
Hist. Avg.
26°
8°
25
Hist. Avg.
26°
8°
26
Hist. Avg.
26°
8°
27
Hist. Avg.
26°
8°
28
Hist. Avg.
26°
8°
29
Hist. Avg.
26°
8°
30
Hist. Avg.
25°
8°
31
Hist. Avg.
25°
8°
1
Hist. Avg.
25°
7°
2
Hist. Avg.
25°
7°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
December Weather in Rock Rapids
Rock Rapids's December 2026 forecast shows daily high temperatures ranging from 24° to 46°, with overnight lows between 6° and 22°. The average high for December is 35° with an average low of 16°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how December weather will actually feel in Rock Rapids. See also: January | February | March.